OK, hypothetical scenario. Suppose you were to seek out an established treecare business, and the owner felt he would be moving away sometime in the near future. The treeguy has been cultivating his clientele for, oh, let's make up a number.... 13 years.
So he's been in the business for thirteen years, is continuously booked, even through the Winter and has not had a break in the axction since 10 years ago when there was a really wicked snowstorm. The treeguy's clientele is over a thousand deep with all those people acting as his maketing force via their word of mouth, and in being repeat customers. The only advertising costs are business cards and estimate sheets.
Since this is 'hypothetical', let's make it juicy. Suppose that treeguy in his 13 years of work refused all work that was more than 4 minutes from his house, and let's go on to say that his chip dump sites are also within that 4 minute radius. He has tens of thousands of trees alone in the neighborhood behind him, but he ventures out into 4 distinct neighborhoods, all adjacent to each other.
What else could we do to make this fantasy picture more vivid? Theeguy works for a local brewpub (his only commercial client) and we'll say the arrangement is beneficial to all parties. The treeguy's mechanic is 1-1/2 minutes down the street. The auto electrician is three minutes the other way, 2 auto parts stores very close. What else? Treeguy has a running list of guys who want your firewood. The chips are always in demand. There are a number of parks, a num,ber of lakes and a major river, all within 5 minutes of home. The cost of living is low. He averages $500 a day.